```html
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Zookeeper 分布式协调服务深度解析</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/tailwindcss/2.2.19/tailwind.min.css">
    <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/6.4.0/css/all.min.css">
    <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet">
    <style>
        body {
            font-family: 'Noto Sans SC', Tahoma, Arial, Roboto, "Droid Sans", "Helvetica Neue", "Droid Sans Fallback", "Heiti SC", "Hiragino Sans GB", Simsun, sans-serif;
            color: #333;
            line-height: 1.6;
        }
        h1, h2, h3, h4 {
            font-family: 'Noto Serif SC', serif;
            font-weight: 600;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #9333ea 100%);
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        .highlight-box {
            position: relative;
        }
        .highlight-box::before {
            content: '';
            position: absolute;
            left: -4px;
            top: 0;
            height: 100%;
            width: 4px;
            background: #4f46e5;
            border-radius: 4px;
        }
    </style>
</head>
<body class="bg-gray-50">
    <!-- Hero Section -->
    <div class="hero-gradient text-white py-24 px-4 sm:px-6 lg:px-8">
        <div class="max-w-4xl mx-auto text-center">
            <h1 class="text-4xl md:text-5xl font-bold mb-6">Zookeeper</h1>
            <p class="text-xl md:text-2xl font-light mb-8 opacity-90">分布式系统的协调中枢</p>
            <div class="max-w-2xl mx-auto">
                <p class="text-lg opacity-85 mb-8">一个开源的分布式协调服务，为分布式应用提供高效、可靠的协调机制，解决配置管理、命名服务、同步服务和集群管理等核心问题。</p>
            </div>
            <div class="inline-flex space-x-4">
                <div class="inline-flex items-center bg-white bg-opacity-20 px-4 py-2 rounded-full">
                    <i class="fas fa-server mr-2"></i>
                    <span>分布式协调</span>
                </div>
                <div class="inline-flex items-center bg-white bg-opacity-20 px-4 py-2 rounded-full">
                    <i class="fas fa-lock mr-2"></i>
                    <span>强一致性</span>
                </div>
                <div class="inline-flex items-center bg-white bg-opacity-20 px-4 py-2 rounded-full">
                    <i class="fas fa-shield-alt mr-2"></i>
                    <span>高可用性</span>
                </div>
            </div>
        </div>
    </div>

    <!-- Main Content -->
    <div class="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8 py-16">
        <!-- Introduction -->
        <section class="mb-16">
            <div class="bg-white rounded-xl shadow-md p-8 highlight-box">
                <div class="flex items-start">
                    <div class="flex-shrink-0 h-12 w-12 rounded-full bg-indigo-100 flex items-center justify-center text-indigo-600 mr-4">
                        <i class="fas fa-info-circle text-xl"></i>
                    </div>
                    <div>
                        <h2 class="text-2xl font-bold mb-4">Zookeeper 概述</h2>
                        <p class="text-gray-700">Zookeeper 由 Apache 软件基金会开发，是一个开源的分布式协调服务。它通过简单的原语实现复杂的分布式协调功能，为分布式应用提供高效、可靠的协调机制，解决了分布式系统中的许多常见问题。</p>
                    </div>
                </div>
            </div>
        </section>

        <!-- Feature Highlights -->
        <section class="mb-16">
            <h2 class="text-3xl font-bold mb-8 text-center">核心特性</h2>
            <div class="grid md:grid-cols-2 lg:grid-cols-4 gap-6">
                <div class="bg-white rounded-xl shadow-md p-6 transition-all duration-300 ease-in-out card-hover">
                    <div class="text-indigo-600 mb-4">
                        <i class="fas fa-sitemap text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">层次化命名空间</h3>
                    <p class="text-gray-600">类似文件系统的树状结构组织数据，每个节点(ZNode)可以存储数据和子节点。</p>
                </div>
                <div class="bg-white rounded-xl shadow-md p-6 transition-all duration-300 ease-in-out card-hover">
                    <div class="text-indigo-600 mb-4">
                        <i class="fas fa-bell text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">Watcher机制</h3>
                    <p class="text-gray-600">监听ZNode的变化事件，当数据或结构发生变化时通知客户端。</p>
                </div>
                <div class="bg-white rounded-xl shadow-md p-6 transition-all duration-300 ease-in-out card-hover">
                    <div class="text-indigo-600 mb-4">
                        <i class="fas fa-shield-alt text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">强一致性</h3>
                    <p class="text-gray-600">使用ZAB协议保证数据一致性，所有客户端看到的数据一致。</p>
                </div>
                <div class="bg-white rounded-xl shadow-md p-6 transition-all duration-300 ease-in-out card-hover">
                    <div class="text-indigo-600 mb-4">
                        <i class="fas fa-users text-3xl"></i>
                    </div>
                    <h3 class="text-xl font-bold mb-3">高可用性</h3>
                    <p class="text-gray-600">通过选举算法和数据复制机制，即使部分服务器故障也能继续服务。</p>
                </div>
            </div>
        </section>

        <!-- Data Model Visualization -->
        <section class="mb-16">
            <h2 class="text-3xl font-bold mb-8 text-center">数据模型</h2>
            <div class="bg-white rounded-xl shadow-md overflow-hidden">
                <div class="p-8">
                    <div class="flex flex-col md:flex-row">
                        <div class="w-full md:w-1/2 pr-0 md:pr-8 mb-6 md:mb-0">
                            <h3 class="text-xl font-bold mb-4 text-indigo-600">ZNode 类型</h3>
                            <div class="space-y-4">
                                <div class="flex items-start">
                                    <div class="flex-shrink-0 h-6 w-6 rounded-full bg-indigo-100 flex items-center justify-center text-indigo-600 mr-3 mt-1">
                                        <i class="fas fa-hdd"></i>
                                    </div>
                                    <div>
                                        <